Hello.  I have a Toshiba P867-S7102 with two HDD bays.  Bought an SSD and cloned WIN 8.1 to that drive, leaving the original HDD in the machine.  Changed boot order to SSD first, and all works save the error code mentioned in the title which will not allow the SSD OS to activate.  If I change the boot order back to the original HDD, the OS is activated.  The intent of this change is to place the OS and programs on the SSD and use the HDD for storage.  I believe my conflict is I the laptop thinks I have two OS versions running, but I am not sure how to deconflict. 

Any help appreciated. 

Jumbled

The only mentions of that error code reference a KMS activated error.  IS this computer from a corporate environment?  Did you clone the hidden boot partition as well?  Have you tried updating the SSD firmware

http://blogs.technet.com/b/craigf/archive/2011/03/03/getting-error-0xc004f074-when-activating-against-kms-server.aspx

http://h30499.www3.hp.com/t5/Notebook-HP-ProBook-ZBook/error-code-0xc004F074-unable-to-activate-windows-8/td-p/6516818#.VOfZyoK0W9c

Hi,

According to your descritpion, your Windows 8.1 should be computer build in system and not activated by KMS server, isn't it?

If that it is, one OEM or retailed Windows Operate system license only available to one device. That's to say, you couldn't use one product key to activate another Windows system.